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Stereo encoder - noise

 
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Stereo encoder - noise
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djhubbalubba
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Hi,
I have a SE5000 DSP+ stereo encoder
Suddenly, I have been noise in the background, it is only when I have stereo signal, when I put over to mono, it is gone,
What is the problem?

It has worked perfectly before,
Sun Sep 07, 2008 2:57 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
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Post Reply with quote
Maybe your output power dropped. Stereo signal needs more signal
for same reception quality.

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Marko - PCS Electronics
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Sun Sep 07, 2008 4:43 pm View user's profile Send private message Visit poster's website
djhubbalubba
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Power from transmitter?
I have 40 watt before now I have 100 watt

I have record from the reciver, you can hear here so you understand what I mean, it's a little difficult for me and explain in English.

Link to soundfile: http://www.dump.no/files/0f70b7a9230b/noise_record.mp3
Sun Sep 07, 2008 5:26 pm View user's profile Send private message
pcs
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Post Reply with quote
Possibly too high RDS carrier?

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Marko - PCS Electronics
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Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Sun Sep 07, 2008 5:45 pm View user's profile Send private message Visit poster's website
djhubbalubba
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Post Reply with quote
No, when I take out the RDS board it is still there.
Sun Sep 07, 2008 6:02 pm View user's profile Send private message
pcs
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Post Reply with quote
What changed in the system when this happened?

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Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 08, 2008 1:40 am View user's profile Send private message Visit poster's website
djhubbalubba
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Post Reply with quote
Also when the rds encoder is disconected the noise still are there. maybe it is the new amp who disturb. Im gonna check it out when im back from work.
Mon Sep 08, 2008 10:40 am View user's profile Send private message
pcs
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Post Reply with quote
Yes, check whatever changed.
Try to see if the noise is coming through power supply, for example, or fans etc.

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Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 08, 2008 11:24 am View user's profile Send private message Visit poster's website
djhubbalubba
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The ''stereo noise'' stop when I turn down the FM amp.

The amplifier and stereoencoder are located in different places.
Mon Sep 08, 2008 3:32 pm View user's profile Send private message
pcs
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Post Reply with quote
Maybe your receiver is overloaded? Try with a receiver at your friends house.

Or somehow you have RF coming back.

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Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 08, 2008 4:36 pm View user's profile Send private message Visit poster's website
djhubbalubba
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No, I don't think that's the problem, the noise are still there when im 3km away from where the transmitter are located...
Wed Sep 10, 2008 7:47 pm View user's profile Send private message
pcs
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Post Reply with quote
Ok, must be something about the amplifier perhaps. Can you send me some photos of your setup? You have my email I think.

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Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Wed Sep 10, 2008 10:25 pm View user's profile Send private message Visit poster's website
djhubbalubba
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Yes.
Thu Sep 11, 2008 10:24 am View user's profile Send private message
djhubbalubba
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I have a little fun things and tell and with this end the conversation.

I disconnected all the equipment and connected it up again, so does everything perfect again as it was before.
Transmit now with 125W perfect stereo and RDS
Tue Oct 07, 2008 4:44 pm View user's profile Send private message
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